Ben just posted on his forums that Carrie Fisher will unfortunately not be able to attend the August show. As he's in San Diego right now, he won't be making the announcement on his main webpage until Monday, but it looks like it's official. However, he said there's a very good chance she will be at the October show, which will be really cool. The October shows always seem to be the best ones of the year. Plus, it's cooler, so it's a better environment for costumes.